Honeywell IS4911 User manual

Brand: Honeywell

Model: IS4911

Type: User manual

This manual is also suitable for

IS4910

IS4910, IS4911

Area Imaging Non-Decode Engine

Integration Guide

Disclaimer

Honeywell International Inc. (“HII”) reserves the right to make changes in specifications and other information

contained in this document without prior notice, and the reader should in all cases consult HII to determine

whether any such changes have been made. The information in this publication does not represent a

commitment on the part of HII.

HII shall not be liable for technical or editorial errors or omissions contained herein: nor for incidental or

consequential damages resulting from the furnishing, performance, or use of this manual.

document may be photocopied, reproduced, or translated into another language without the prior written

consent of HII.

Web Address: www.honeywell.com/aidc

Trademarks

Metrologic, MetroSelect, MetroSet2, Omniplanar, and FirstFlash are trademarks or registered trademarks of

Metrologic Instruments, Inc. or Honeywell International Inc.

Microsoft, Windows, and Windows 95 are trademarks or registered trademarks of Microsoft Corporation.

Molex, FFC/FPC, and SlimStack are trademarks or registered trademarks of Molex, Inc.

Other product names mentioned in this manual may be trademarks or registered trademarks of their respective

companies and are the property of their respective owners.

Patents

Please refer to page 32 for a list of patents.

Table of Contents

Introduction

Product Overview ..............................................................................................................................................1

Models and Accessories ...................................................................................................................................2

Components of the IS4910 / IS4911 Non-Decode Engine................................................................................3

Labels................................................................................................................................................................4

Mounting Specifications

IS4910-00 / IS4911-00 Non-Decode Engine Dimensions .................................................................................5

IS4910-01 / IS4911-01 Non-Decode Engine Dimensions .................................................................................6

IS4910-02 / IS4911-02 Non-Decode Engine Dimensions .................................................................................7

Enclosure Specifications

Electrostatic Discharge (ESD) Cautions ........................................................................................................8

Airborne Contaminants and Foreign Materials...............................................................................................8

Output Window Properties .............................................................................................................................9

Output Window Coatings ...............................................................................................................................9

Optical Clearance Specifications .................................................................................................................10

System Considerations

Power Supply Decoupling ...............................................................................................................................11

Power Sequencing ..........................................................................................................................................11

High-Speed Digital Bus ...................................................................................................................................11

Thermal Considerations ..................................................................................................................................11

Theory of Operation

Overview .........................................................................................................................................................12

Snapshot Mode ...............................................................................................................................................14

Snapshot Illumination Waveforms................................................................................................................15

Video Mode .....................................................................................................................................................16

Targeting .........................................................................................................................................................16

C Interface....................................................................................................................................................16

Camera Bus Timings.......................................................................................................................................17

Wake Up Timing..............................................................................................................................................18

Electrical Specifications...................................................................................................................................19

iii

Depth of Field vs. Bar Code Element

IS4910 .............................................................................................................................................................20

IS4911 .............................................................................................................................................................21

Design Specifications

Operational......................................................................................................................................................22

Mechanical ......................................................................................................................................................23

Electrical..........................................................................................................................................................23

Environmental .................................................................................................................................................24

Imaging Engine Terminations

IS4910 / IS4911 Pinout Connections...............................................................................................................25

Flex Cable Specifications

Pinout, Host End .............................................................................................................................................26

Dimensions......................................................................................................................................................27

Installation Notes.............................................................................................................................................28

Regulatory Compliance

Safety ..............................................................................................................................................................29

Europe..........................................................................................................................................................29

United States................................................................................................................................................30

Canada.........................................................................................................................................................30

LIMITED WARRANTY .............................................................................................................................................31

Patents...............................................................................................................................................................32

Index ..................................................................................................................................................................33

Contact Information..........................................................................................................................................35

Product Service and Repair.............................................................................................................................36

Introduction

Product Overview

The IS4910 series of non-decode miniature area imaging engines is designed for integration into customer

OEM devices. When integrated with a host processor and decoding software from Omniplanar

, the engine

can be used to capture images for decoding 1D and 2D bar codes in addition to OCR fonts.

The compact engine has several models available to accommodate all types of mounting requirements. All

model types provide two blind holes for self-tapping screws along with a keying location point. The IS4910-01

model provides two additional through holes located on tabs extended from the sides of the engine's chassis

and the IS4910-02 provides threaded inserts instead of through holes on the extended tabs.

The engine's physical design and low power requirements support integration into portable data terminals,

hand-held bar code scanners, ID verification devices, kiosks, portable-shopping systems, mass-storage

devices, lottery terminals, and medical/diagnostic devices.

A high-density version, IS4911 is also available.

Additional key features include:

• Designed to scan 1D bar codes as dense as 4 mil (0.102 mm) and 2D bar codes as dense as 10 mil

(0.254 mm; Matrix codes)

• High resolution (1280 × 960 pixels)

• The ability to switch between Snapshot and Video modes for different applications

• Capture and transmit high-quality black and white images

• FirstFlash

circuitry which automatically adjusts to environmental illumination for excellent light immunity

• Built-in aiming for easy scanning

• Standby mode for power conservation

• Low mass (< 6 g)

• Industrial standard output for seamless integration, Molex

0.50 mm (.020") Pitch SlimStack™ Plug,

P/N 55560-0227

• A choice of mounting options

Models and Accessories

Model Description

-00

Non-Decode Area Imaging Engine

Mounting option:

• two blind holes for self-tapping screws

-01

Non-Decode Engine

Mounting options:

• two blind holes for self-tapping hardware

• two through holes located on tabs that extend from two sides of the engine's

chassis

IS4910

IS4911

-02

Non-Decode Engine

Mounting options:

• two blind holes for self-tapping hardware

• threaded inserts located on tabs that extend from two sides of the engine's chassis

77-77104

Flex Cable, 22-Pin, 0.50 mm (.020") Pitch SlimStack™ Receptacle,

Molex P/N 54722-0224

See page 26 for additional flex cable information.

46-00550

Software Development Kit

For detailed information on this item, contact a customer service representative

Molex and SlimStack are trademarks or registered trademarks of Molex, Inc.

Components of the IS4910 / IS4811 Non-Decode Engine

Item No. Description Item Location

1 Targeting

2 Area Illumination

3 Camera Imager

4 FirstFlash Aperture

5 Mounting Points (see pages 6 - 7)

Mounting Points Provided for

Self-Tapping Screws (see pages 5 - 7)

7 Keying Location (see pages 5 - 7)

8 Printed Circuit Boards

22-Pin, 0.50 mm (.020") Pitch

SlimStack™ Plug, Molex

(P/N 55560-0227)

Figure 1. IS4910-00 / IS4911-00

Figure 2. IS4910-01 / IS4910-02

IS4911-01 / IS4911-02

Molex and SlimStack are trademarks or registered trademarks of Molex, Inc.

Labels

The engine’s serial number/model number label is located on the side of the engine.

Figure 3. Serial Number Label

Mounting Specifications

IS4910-00 / IS4911-00 Non-Decode Engine Dimensions

The -00 engine model includes two Ø .075" [1.9 mm] blind holes for mounting the engine with self-tapping

screws. The mounting holes are located on the bottom of the unit with an additional keying location point for

engine alignment.

Warning: The limited warranty (on page 31) is void if the following guidelines are not adhered to when

mounting the engine.

When securing the engine with self-tapping screws:

• Use M2.2 x 4.5 Philips pan head, type AB, Steel, zinc clear, Trivalent self-tapping screws.

• Do not exceed 1.75 +0.5 in-lb [2.02 +6 cm-kg] of torque during screw installation.

• Use a minimum mount thickness of 0.3 mm.

• Use safe ESD practices when handling and mounting the engine.

Figure 4. IS4910-00 / IS4911-00 Dimensions

IS4910-01 / IS4911-01 Non-Decode Engine Dimensions

The -01 engine model includes two Ø .075" [1.9 mm] blind holes for mounting the engine with self-tapping

screws. Two additional Ø .098" ± .002 [2.5 mm ±.05 mm] clearance holes are provided as a secondary

mounting option. The clearance holes are located on tabs that extend from the sides of the engine's chassis.

A keying location point is provided on the bottom of the engine to assist with alignment.

Warning: The limited warranty (on page 31) is void if the following guidelines are not adhered to when

mounting the engine.

When securing the engine with self-tapping screws:

• Use M2.2 x 4.5 Philips pan head, type AB, steel, zinc clear, Trivalent self-tapping screws.

• Do not exceed 1.75 +0.5 in-lb [2.02 +6 cm-kg] of torque during screw installation.

• Use a minimum mount thickness of 0.3 mm.

• Use safe ESD practices when handling and mounting the engine.

Figure 5. IS4910-01 / IS4911-01 Dimensions

IS4910-02 / IS4911-02 Non-Decode Engine Dimensions

The -02 engine model includes two Ø .075" [1.9 mm] blind holes for mounting the engine with self-tapping

screws. Two additional M2 x .4 threaded inserts are provided as a secondary mounting option. The threaded

inserts are located on tabs that extend from the sides of the engine's chassis. A keying location point is

provided on the bottom of the engine to assist with alignment.

Warning: The limited warranty (on page 31) is void if the following guidelines are not adhered to when

mounting the engine.

When securing the engine by utilizing the two M2 threaded inserts:

• Use M2.2 x 4.5 Philips pan head, type AB, steel, zinc clear or equivalent screws.

• Do not exceeding 2.88 cm-kg [2.5 in-lb] of torque when securing the engine assembly to the host.

• Use a minimum mount thickness of 0.3 mm.

• Use safe ESD practices when handling and mounting the engine.

Figure 6. IS4910-02 / IS4911-02 Dimensions

Enclosure Specifications

The imaging engine was specifically designed for integration into custom housings for OEM applications. The

imaging engine’s performance will be adversely affected or permanently damaged when mounted in an

unsuitable enclosure.

Warning: The limited warranty (on page 31) is void if the following considerations are not adhered to when

integrating the engine into a system.

Electrostatic Discharge (ESD) Cautions

All imaging engines are shipped in ESD protective packaging due to the sensitive nature of the

engine's exposed electrical components.

• ALWAYS use grounding wrist straps and a grounded work area when unpacking

and handling the engine.

• Mount the engine in a housing that is designed for ESD protection and stray electric fields.

ESD has the ability to modify the electrical characteristics of a semiconductor device, possibly

degrading or even destroying the device. ESD also has the potential to upset the normal operation

of an electronic system, causing equipment malfunction or failure.

Airborne Contaminants and Foreign Materials

The imaging engine has very sensitive miniature electrical and optical components that must be protected from

airborne contaminants and foreign materials. In order to prevent permanently damaging the imaging engine

and voiding the limited warranty (on page 31), the imaging engine enclosure must be:

• Sealed to prevent infiltration by airborne contaminants and foreign materials such as,

dust, dirt, smoke, and smog.

• Sealed to protect against water, humidity and be non-condensing.

Refer to page 11 for information on power and thermal considerations.

Output Window Properties

An improperly placed window has the serious potential to reduce the imaging engine’s performance.

Careful consideration must be made when designing the output window’s distance and angle relative

to the imaging engine’s camera aperture.

Follow these guidelines when designing the output window.

• The output window material should have a spectral transmission of at least 85% from 580 nm to

680 nm and should block shorter wavelengths.

• It should have a 60-40 surface quality, be optically flat, clear, and free of scratches, pits, or seeds.

If possible, recess the window into the housing for protection or apply a scratch resistance coating

(see Output Window Coatings below).

• Apply an anti-reflective coating to the window surfaces to reduce the possibility of reflective light

interfering with the engine’s performance.

• The clear aperture of the output window should extend beyond the Field of View. Refer to page 10

and pages 20 - 21 for Field of View specifications.

• The window size must accommodate the illumination and targeting areas shown on page 10.

• The window must be parallel to the engine face.

• The distance from the engine face to the inside surface of the window of the enclosure should be

minimized and should not exceed 0.5 mm (0.02") due to possible specular reflections from internal

area illumination.

Output Window Coatings

• Anti-Reflection

An anti-reflective coating can be applied to the inside and/or outside of the window to reduce the

possibility of internal beam reflections interfering with the performance of the engine. If an anti-

reflective coating is applied, it is recommended that it be on both sides of the window providing a

0.5% maximum reflectivity on each side from 600 - 700 namometers at the nominal window tilt angle.

The coating must also meet the hardness adherence requirements of MIL-M-13508.

• Polysiloxane Coating

Applying a polysiloxane coating to the window surface can help protect the window from surface

scratches and abrasions that may interfere with the performance of the engine. Recessing the window

into the housing can also provide added protection against surface damage such as scratches and

chips. If an anti-reflective coating is used, there is no need to apply a polysiloxane coating.

Optical Clearance Specifications

The window size and enclosure design must provide unobstructed clearance for the illumination and targeting

areas shown below to avoid optical interference that decreases the engine's performance.

IS4910

Figure 7. IS4910 Optical Clearance Specifications

IS4911

Figure 8. IS4911 Optical Clearance Specifications

Specifications are subject to change without notice.

System Considerations

In order to ensure proper operation of the decode engine’s electrical system; care must be taken to ensure the

following requirements are met.

Power Supply Decoupling*

The engine requires clean filtered power supplies for both the VLED and Vimager power rails. Special care

must be taken for the Vimager line as this voltage is used to power the imaging sensor. The power line must

be heavily decoupled to prevent noise from coupling into the engine, which can reduce image quality.

Power Sequencing*

All signals to and from the engine (except for VLED) are relative to Vimager. These pins are not over voltage

tolerant. As such, care must be taken to ensure that the voltage on these signals never exceed the voltage on

the Vimager pin.

Refer to page 11 for additional electrical specifications and page 25 for pinout information.

High-Speed Digital Bus*

Due to the relative high-speed nature of the Camera Data bus (48 MHz max), care must be taken to ensure

signal integrity and minimize clock skew. To reduce electromagnetic interference and ringing on the lines,

22-ohm series resistors have been added to each of the pixel data lines as well as the pixel clock and HSYN

signals. The capacitive loading and trace length on these lines should be minimal to ensure proper operation.

Thermal Considerations

The engine is qualified at temperatures from 0°C to 40°C (32°F to 104°F). Care must be taken to ensure that

ambient temperatures do not exceed this range in order to guarantee operation. The illumination LEDs

produce a considerable amount of heat when left on for extended time periods. The on time of these LEDs

should be minimized and airflow should be provided whenever possible to minimize internal heating.

Excessive heating can damage the LEDs and degrade image quality.

* See page 25 for additional information on electrical specifications.

See pages 25 and 26 for additional information on the engine and flex cable pinouts.

Theory of Operation

Overview

The IS4910 imaging engine series is specifically designed for integration into handheld portable data terminals

or other OEM devices used for barcode scanning and/or OCR applications. Since the imaging engine

functions like a digital camera, the engine is capable of digital image capture, document lift, and signature

capture. With software integration, the non-decode engine will support decoding of all standard 1D & 2D

barcodes, reading OCR.

The compact engine has a 1.2M pixel CMOS imaging sensor, high intensity illumination LEDs, and an LED

targeting system. The non-decode engine also incorporates FirstFlash

a patented technology that regulates

the illumination time during image capture, reducing the need for multiple image acquisition.

The IS4910 series has two types of imaging modes, the Snapshot mode and the Video mode. The Snapshot

mode facilitates fast and accurate image acquisition with a minimum amount of power consumption. In this

mode, the LEDs are only activated for a very short time while FirstFlash ensures proper illumination.

The amount of images required is minimized, ultimately reducing the engine's power consumption. Detailed

information on the Snapshot mode can be found on page 14. The second type, the Video mode, enables fine

control of the camera exposure time making the mode suitable for high ambient light applications. Detailed

information on the Video mode can be found on page 16.

Communication with the image sensor is done over two buses, the control bus (I

C) and the data bus. The

Control bus is used to send programming commands to the image sensor. The data bus is used to transfer

images from the image sensor to the host system. The image data rate is determined by the Pixel Clock

(PCLK), which has a maximum frequency of 48 MHz. Note that on some host systems, such as those based

on the XScale PXA270 processor, the platform may not be able to support the 48 MHz pixel clock. In these

applications, the pixel clock can be configured to 24 MHz or 12 MHz via the (I

C) control bus. See Figure 9 on

page 13 for an illustrated depiction of the engine’s system architecture.

Figure 9. IS4910 / IS4911 System Architecture

Honeywell Scanning and Mobility provides a Software Development Kit (P/N 46-00550) that will ease the

functional integration of the IS4910 or IS4911 non-decode engine. The SDK includes all the necessary

software components needed to enable an application developer to control and communicate with the engine,

acquire images, and decode barcodes. Additional information about the Software Development Kit and its

application programming interfaces (APIs) is provided in the IS4910 Series Area Imaging Engine

Programmer's Manual (P/N 00-02291). Contact a, customer service representative at 1-800-436-3876 for

additional information on this item and the Software Development Kit.

Snapshot Mode

In the Snapshot mode of operation, image acquisition begins on the rising edge of the Trigger signal.

Image integration continues until the trigger line is brought low at which time the Image Data is output on the

Camera bus. In this mode, the area illumination is coincident with the integration time and is activated on the

rising edge of the Trigger signal. The illumination will remain on until the FirstFlash circuitry determines that

sufficient light has reached the sensor. At that point, the FirstFlash circuitry will then automatically disable

illumination. The user can override the FirstFlash circuitry by activating the Illum_On signal along with the

Trigger signal. For additional information, refer to Snapshot Illumination Waveforms on page 15.

The minimum Trigger pulse time required to initiate image acquisition in Snapshot mode can be calculated

using the following formula:

Ttrig_min = 84 + (<image-height> + 19) * 9 / PCLK

Where PCLK is the pixel clock output of the image sensor

and can be programmed to 48 MHz, 24 MHz, or 12 MHz.

For example, in systems that cannot support 48 MHz pixel clock rates (such as Xscale PXA270 processor

based platforms) the pixel clock can be reduced to 24 MHz or 12 MHz. Thus, for the default image height of

960 rows at 24 MHz pixel clock, the Trigger pulse time should be at least 451 µs.

As mentioned above, the trigger pulse controls both the image integration time and the maximum duration of

the illumination. The maximum time is application specific. Increasing the time will typically result in brighter

images but longer exposure time will make the unit susceptible to motion blur.

Software used by the engine device driver and CamLib APIs included in the Software Development Kit provide

the ability for precise control of the timings of the Trigger signal, the image sensor, and the image dataflow

from the camera to the host system.

The actual time of the illumination flash in Snapshot mode can vary between the minimum illumination time

and the maximum illumination time. The maximum illumination time is determined by the duration of the

Trigger signal. The minimum illumination time is determined by the duration of the Illum_On signal. The actual

time of the illumination flash is determined by the internal Microcontroller based on the measurement of the

light intensity performed by the FirstFlash circuitry.

When the light intensity, as measured by the FirstFlash circuitry, exceeds a pre-set factory threshold, the

Microcontroller immediately turns illumination off if the time elapsed from the start of illumination is greater than

the minimum illumination time (i.e. if the Illum_On signal is de-asserted); otherwise, it waits until the minimum

illumination time elapses and then turns the illumination off.

Precise control of the timings of the Illum_On signal is done in software by the engine device driver and

CamLib APIs included in the Software Development Kit.

Snapshot Illumination Waveforms

The following waveforms show how the illumination LEDs are controlled relative to the input signals

(Trigger and Illum_On) during the snapshot mode. The Trigger signal determines when the illumination and

image integrations begin. In addition, the duration of this signal determines the maximum integration and

illumination time. The Illum_On signal can be used in conjunction with the Trigger signal to ensure a minimum

amount of illumination.

Example 1: Snapshot mode with Illumination duration controlled by FirstFlash circuitry only (see figure below).

= Denotes the actual duration of LED light will be determined by the FirstFlash circuitry. The

duration will vary based on object, object distance, and ambient light conditions.

Figure 10. Example 1

Example 2: Snapshot mode with Illumination being forced on for a given duration after which FirstFlash

circuitry takes over (see figure below).

= Denotes the actual duration of LED light will be determined by the FirstFlash circuitry. The

duration will vary based on object, object distance, and ambient light conditions.

Figure 11. Example 2

Video Mode

The Video Mode allows for streaming video from the CMOS imager. The main advantage in the mode is that

the user has fine control over the exposure time. Fine control over the exposure time makes this mode well

suitable for high ambient light applications. The Video Mode is initiated through commands via the I

C bus.

During this mode of operation, the Trigger signal must be held low. If lighting is required, the Illumination LEDs

can be controlled via the Illum_On control signal.

Control of all signals and image dataflow in Video Mode is done in software by the engine device driver and

CamLib APIs included in the Software Development Kit. See SDK documentation for more details.

When not in Video Mode, the image sensor is always ready for Snapshot image acquisition.

Targeting

The engine uses a targeting LED to indicate the center of the imaging field. This LED can be activated at any

time by asserting the Aimer signal. The targeting LED is independent of the mode of operation and

illumination. However, it is strongly recommended that the targeting LED not be activated during image

acquisition as the light from the targeting LED will be visible in the image and may result in “hot

spots”. Control of the aiming mechanism is done in software by the IS4910 device driver and CamLib APIs

included in the SDK.

C Interface

The IS4910 series engines use an I

C compliant interface to communicate with the host system. The bus

allows the host to communicate directly with the image sensor and illumination microcontroller. Both of these

devices function as auxiliary* devices on the bus. The illumination Microcontroller is capable of running at

speeds up to 100 kHz whereas the image sensor can support frequencies up to 400 kHz. The standard

configuration of the IS4900 series of imaging engines does not incorporate pull up resistors on the SDA and

SCL lines in order to allow flexibility for the end user when choosing the resistor values. These resistors must

be provided by the host system and sized to meet the I

C timing requirements. Timing provided by the I

C bus

specification must be observed in order to guarantee proper operation of the engine.

The two I

C devices used in the IS4910 Engine use the following addresses:

• CMOS Image: 0x10

• Illumination Micro: 0x61 and 0x70

For details regarding programming of the image sensor, please refer to documentation provided with the

Software Development Kit. For details regarding the I

C protocol, see the Phillips I

C specification.

* In the Phillips I

C specification, auxiliary is defined as slave.

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Honeywell IS4911 User manual

Brand: Honeywell

Model: IS4911

Type: User manual

This manual is also suitable for

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Honeywell IS4911 User manual

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